Helianthus neglectus

Helianthus neglectus is a species of sunflower known by the common names neglected sunflower. It is native to the southwestern United States in southeastern New Mexico and West Texas.[1]

Helianthus neglectus
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Helianthus
Species:
H. neglectus
Binomial name
Helianthus neglectus
Heiser 1958 not Otto ex A.Gray 1884

H. neglectus grows on sand dunes and other sandy soil. This wildflower is an annual herb up to 200 cm (almost 7 ft) tall, growing from a thick, fleshy taproot. One plant produces one to five flower heads containing 21-31 yellow ray florets surrounding 150 or more red or purple disc florets.[2][3]

H. neglectus hybridizes with several other species in the region: H. annuus, H. debilis, and H. petiolaris.[3]

References
  1. Biota of North America Program 2014 county distribution map
  2. Flora of North America Helianthus neglectus Heiser, 1958. Neglected sunflower
  3. Heiser, Charles Bixler 1958. Rhodora 60(718): 275–279 description in Latin, commentary in English, full-page line drawing on page 276


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